[Vwdiesel] Injection pump --- ( Lore for beginners )
h_hagar at prcn.org
Mon Jun 21 10:33:47 EDT 2004
FAQ : What exactly is the difference between the different Rabbit
One answer: Original Rabbit 1.5L NA 1980 pump was a 068-130-107 A.
That is a VW number. Next a Pump --- identical pump is to be used on a
later model or different Engine . Then you will see a letter added ---like G --
so now it is a AG pump. In the test and calibration rig the setup specks
are different ---same pump .
If you look up in your Bentley basic tune-up specs the maximum minimum
RPM are different ---1980 max is 5600 RPM and the 1983 is 5400 RPM .
Right there is a difference ----the governor screw is set different from one pump to the other.
Remember the screw has LEFT HAND THREAD.
1982 1.6 L NA pump was a 107 pump , a later 1.6L NA
may specify a 109 pump.
A 109 pump can deliver more maximum fuel. (think Turbo).
More Lore as we go.
PS: Have fun.
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